Seems to me your youth pastor isn't properly taking context into account in this case, as you have noted. However, since MOST people seem to get married and have families, it is good for young people to give serious thought to their dating and relational practices in light of their potential future families. Marriage and family also provide an environment of growing and learning which teaches us about ourselves and, since marriage is a reflection of Christ and the Church, as Paul talked about in
Galatians 5, it teaches us about our relationship with Him.
The bottom line is that whether one remains single or marries, he or she is to lead a life in that context that glorifies God. In either case, Paul says that one will do well. The single person can single-mindedly focus all his or her attention on ministering to others. The married individual focuses their time, energy, and resources into and through the marriage in their service to God. Neither marriage nor singleness should be used as a context for being selfishly indulgent. Honor God in whichever state you are, and you will be blessed.